10/13 Glock 21 Factory .45acp Mag w/ MAGBLOCK

10/13 new factory Glock 21 .45 ACP Gen 4 magazine.

A Magblock 10 round limiter has been inserted and a rivet has been installed in the floorplate and floorplate retainer.

Will work with the model 21 or other .45acp Glocks, will fit flush with the Glock 21 and hang below the grip some with other more compact models. 4th generation mags that will work with ambi mag releases.